Serum vs Moisturiser: What’s the Difference & Which One Does Your Skin Really Need? If you’ve ever built a skincare routine, you’ve probably wondered: Do I need both a serum and a moisturiser? They may look similar, but they do completely different jobs and using them correctly can transform your skin. Here’s a simple, beginner-friendly guide to help you understand the difference and choose what works best for your skin. What Is a Serum? A serum is a lightweight, fast-absorbing liquid packed with high-potency active ingredients. It targets specific skin concerns such as: Dullness Dark spots & pigmentation Acne marks Uneven skin tone Dehydration Fine lines Why Serums Work So Well They have smaller molecules , which penetrate deeper into the skin. They deliver targeted results , making them great for glow, hydration, acne, or anti-aging. They show visible improvements faster than most skincare products. Popular Types of Serums Vitamin C ...